CVE-2023-49798

    Dashboard / Vulnerabilities / CVE-2023-49798

    CVE-2023-49798

    Published: 8 Dec 2023Last Modified: 28 Oct 2026

    Summary: Duplicated execution of subcalls in OpenZeppelin Contracts

    Details: OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released in `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]`, all subcalls are executed twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5. The 4.9.4 version is marked as deprecated. Users are advised to upgrade. There are no known workarounds for this issue.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49798.json, https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8, https://nvd.nist.gov/vuln/detail/CVE-2023-49798, https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0d5f54e69b2a2058bc98651a2e200f558c84a953
    Fixed -88ac712e06832bce73b41e8166cded2729e25205

    Affected versions

    4.9.4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High